AU522756B2 - Proportional ground current relay - Google Patents
Proportional ground current relayInfo
- Publication number
- AU522756B2 AU522756B2 AU39605/78A AU3960578A AU522756B2 AU 522756 B2 AU522756 B2 AU 522756B2 AU 39605/78 A AU39605/78 A AU 39605/78A AU 3960578 A AU3960578 A AU 3960578A AU 522756 B2 AU522756 B2 AU 522756B2
- Authority
- AU
- Australia
- Prior art keywords
- current relay
- ground current
- proportional ground
- proportional
- relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/083—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for three-phase systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/830,653 US4161761A (en) | 1977-09-06 | 1977-09-06 | Proportional ground current relay |
USUS830653 | 1977-09-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU3960578A AU3960578A (en) | 1980-03-13 |
AU522756B2 true AU522756B2 (en) | 1982-06-24 |
Family
ID=25257406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU39605/78A Expired AU522756B2 (en) | 1977-09-06 | 1978-09-06 | Proportional ground current relay |
Country Status (7)
Country | Link |
---|---|
US (1) | US4161761A (en) |
AR (1) | AR221064A1 (en) |
AU (1) | AU522756B2 (en) |
BR (1) | BR7805804A (en) |
CA (1) | CA1101066A (en) |
NZ (1) | NZ188350A (en) |
ZA (1) | ZA785060B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4272797A (en) * | 1979-07-31 | 1981-06-09 | General Electric Company | Fast recovery peak detector |
US4562506A (en) * | 1984-02-14 | 1985-12-31 | Cooper Industries, Inc. | Distribution line powered switchgear control |
US4931896A (en) * | 1985-03-14 | 1990-06-05 | Cooper Industries, Inc. | Distribution line switchgear control with isolated cascaded power supplies |
US4912591A (en) * | 1985-03-14 | 1990-03-27 | Cooper Power Systems, Inc. | Distribution line switchgear control employing a precision rectifier |
US4851782A (en) * | 1987-01-15 | 1989-07-25 | Jeerings Donald I | High impedance fault analyzer in electric power distribution |
US4928200A (en) * | 1987-04-02 | 1990-05-22 | Cherry Semiconductor Corporation | Overcurrent protection for switching mode power converter |
US8537023B2 (en) * | 2011-05-26 | 2013-09-17 | Ilight Technologies, Inc. | Method and apparatus pertaining to automatic electrical-fault detection |
KR101517159B1 (en) * | 2013-11-13 | 2015-05-04 | 주식회사 에렐 | Three phase electric leakage current circuit braker with electric shock protection |
US11476674B2 (en) * | 2018-09-18 | 2022-10-18 | Sentient Technology Holdings, LLC | Systems and methods to maximize power from multiple power line energy harvesting devices |
JP7148476B2 (en) * | 2019-10-25 | 2022-10-05 | 株式会社東芝 | Power switch, power rectifier and power converter |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3345539A (en) * | 1965-07-19 | 1967-10-03 | Allis Chalmers Mfg Co | Static overcurrent tripping system having phase-to-phase and phase-to-ground fault protection |
US3434011A (en) * | 1966-08-25 | 1969-03-18 | Ite Circuit Breaker Ltd | Saturating current transformer for static relays |
US3689801A (en) * | 1970-05-07 | 1972-09-05 | Westinghouse Electric Corp | Circuit breaker including improved current auctioneering circuit |
US3956670A (en) * | 1973-01-30 | 1976-05-11 | Westinghouse Electric Corporation | Circuit interrupter circuit including improved control |
US4027203A (en) * | 1975-03-06 | 1977-05-31 | Mcgraw-Edison Company | Protective switch device for electrical distribution systems |
US4060844A (en) * | 1976-02-17 | 1977-11-29 | I-T-E Imperial Corporation | Solid state tripping circuit |
-
1977
- 1977-09-06 US US05/830,653 patent/US4161761A/en not_active Expired - Lifetime
-
1978
- 1978-08-30 CA CA310,299A patent/CA1101066A/en not_active Expired
- 1978-09-05 BR BR7805804A patent/BR7805804A/en unknown
- 1978-09-05 NZ NZ188350A patent/NZ188350A/en unknown
- 1978-09-06 AR AR273597A patent/AR221064A1/en active
- 1978-09-06 AU AU39605/78A patent/AU522756B2/en not_active Expired
- 1978-09-06 ZA ZA00785060A patent/ZA785060B/en unknown
Also Published As
Publication number | Publication date |
---|---|
BR7805804A (en) | 1979-04-24 |
NZ188350A (en) | 1982-09-07 |
AU3960578A (en) | 1980-03-13 |
US4161761A (en) | 1979-07-17 |
CA1101066A (en) | 1981-05-12 |
ZA785060B (en) | 1979-08-29 |
AR221064A1 (en) | 1980-12-30 |
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